Revert of Reland: Geolocation: move from content/browser to device/

content/browser/geolocation/wifi_polling_policy.h

Index: content/browser/geolocation/wifi_polling_policy.h
diff --git a/content/browser/geolocation/wifi_polling_policy.h b/content/browser/geolocation/wifi_polling_policy.h
new file mode 100644
index 0000000000000000000000000000000000000000..5798e5dddaa3c5c71544ee282664b5eaf10e08a1
--- /dev/null
+++ b/content/browser/geolocation/wifi_polling_policy.h
@@ -0,0 +1,57 @@
+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CONTENT_BROWSER_GEOLOCATION_WIFI_POLLING_POLICY_H_
+#define CONTENT_BROWSER_GEOLOCATION_WIFI_POLLING_POLICY_H_
+
+#include "base/macros.h"
+
+namespace content {
+
+// Allows sharing and mocking of the update polling policy function.
+class WifiPollingPolicy {
+ public:
+  WifiPollingPolicy() {}
+  virtual ~WifiPollingPolicy() {}
+  // Calculates the new polling interval for wiFi scans, given the previous
+  // interval and whether the last scan produced new results.
+  virtual void UpdatePollingInterval(bool scan_results_differ) = 0;
+  virtual int PollingInterval() = 0;
+  virtual int NoWifiInterval() = 0;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(WifiPollingPolicy);
+};
+
+// Generic polling policy, constants are compile-time parameterized to allow
+// tuning on a per-platform basis.
+template<int DEFAULT_INTERVAL,
+         int NO_CHANGE_INTERVAL,
+         int TWO_NO_CHANGE_INTERVAL,
+         int NO_WIFI_INTERVAL>
+class GenericWifiPollingPolicy : public WifiPollingPolicy {
+ public:
+  GenericWifiPollingPolicy() : polling_interval_(DEFAULT_INTERVAL) {}
+  // WifiPollingPolicy
+  void UpdatePollingInterval(bool scan_results_differ) override {
+    if (scan_results_differ) {
+      polling_interval_ = DEFAULT_INTERVAL;
+    } else if (polling_interval_ == DEFAULT_INTERVAL) {
+      polling_interval_ = NO_CHANGE_INTERVAL;
+    } else {
+      DCHECK(polling_interval_ == NO_CHANGE_INTERVAL ||
+             polling_interval_ == TWO_NO_CHANGE_INTERVAL);
+      polling_interval_ = TWO_NO_CHANGE_INTERVAL;
+    }
+  }
+  int PollingInterval() override { return polling_interval_; }
+  int NoWifiInterval() override { return NO_WIFI_INTERVAL; }
+
+ private:
+  int polling_interval_;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_GEOLOCATION_WIFI_POLLING_POLICY_H_